URGENT, PLEASE HELP A carpenter built three bookcases, A, B, and C, to stand next to each other along a wall. The total length of the wall is
450 centimeters. The carpenter will build two more bookcases, D and E, along the same wall. these two bookcases
will have equal widths. The widths of bookcases A, B, and C are shown: What is the width, n, for bookcases D and E.
Bookcases (not drawn to scale)
A
D
E
B
90
C
110
100
n
n

The width of bookcase D is 61 cm

The width of bookcase E is 61 cm

Step-by-step explanation:

see the attached figure to better understand the problem

step 1

Sum the widths of the three bookcases A, B and C

step 2

Subtract the sum of the three bookcases A,B and C from the total length of the wall

step 3

Divide that answer in step 2 by 2, and that will let you know the widths of D and E, because they may have equal widths

therefore

The width of bookcase D is 61 cm

The width of bookcase E is 61 cm

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